Shock absorber



Feb. 24-. 1925. 1,527,592

H. L. LIVEZEY SHOCK ABSORBER Filed March 13, 1924 To all whom it concern:

Patented Feb. 24 1925.

HARRY L. LIVEZEY, OF RENO, NEVADA.

snocx ansonnnnt Application filed March 13, 1924. Serial 1%. 699,091.

, Be it known that I, HARRY L. LIVEZEY, a citizen" of the United States, residing at Reno, Nevada, have invented certain new and useful Improvements in Shock Absorbers, of which the following is a specification. v

This invention relates to shock absorbers fish as are used on automobiles and the 1 e. 4 Y I 7 One important object of the invention is to improve the general construction of de-.

vices of this character.

A second important object of the invention is to (provide an improved arrangement of pivote dashpot cylinder in connection with devices of this character.

A third important object of the invention is to provide an improved by-pass arrangement for such cylinders.

With the above and other objects in view as will be hereinafter apparent, the invention consists in general of certain novel details of construction and combinations of parts hereinafter. fully described, illustrated in the accompanying drawings and specifically claimed.

In the accompanyin drawings like characters of reference indicate like parts in the several views, and: v

Figure 1 isa side elevation of. a portion of an automobile frame showing an axle and its spring.

Figure 2 is an enlarged detail view of'the cylinder used herewith.

Figure 3 is a detail section on the line 3--3 of Figure 1.

As herein disclosed the device is shown as a plied to an automobile havin a frame mom or 10 of the usual channel s ape and provided with an axle 11 and semi-elliptic spring 12.

The invention itself consists of a clamp 13 which is fixed to the axle 11 and has a pro- 'ecting arm 14' to which is connected by a all and socket joint a vertical link 15 havin its u per end connected to one arm of a be 1 cran lever 16, this arm preferably beother end oscillated through a vertical are.

Within the cylinder is the usual piston 22 'to which is connected the iston rod 23. This rod passes through the ead of the cylinder remote from the pivot bolt and is connected to the vertical arm 18of the bell crank.

It is to be noted that the link connection and the last mentioned connection are of preferably ball and socket joints or other forms of universal joints.

Connecting the heads of the cylinder 19 are by-pass pipes 23 and 24 and each of these pipes is provided with an adjustable check valve 25, said valves opening in opposite directions so that when the piston 22 travels toward one end of the cylinder one valve will be open and the other closed while, reverse movement of the piston reverses the position of the valves. The usual stnfl' box 26 is employed.

It is to be noted that the tube or pipe 23 is smaller than the pipe 24. This construction' is used because it is desirable, to allow ready movement of the piston 22 toward the pivot end of the cylinder while checking the movement to a great extent toward the other end. Thusthe natural spring flexure which takes place when the vehicle wheel engages a projection on the ground is not checked but the rebound is checked and the shock thus absorbed.

There has thus been rovided a simple and efficient device of t he kind described and for the purpose specified.

' 7 It is obvious that minor changes may be made in the form and construction of the.

comprising a clip engageable with the've-- hicle axle, a link extending upwardly from said clip, a bell crank pivoted at its angle to said frame, said bell crank having one arm extending substantially horizontal and the other arm extending substantially vertical, said link having its upper end pivotally connected to said horizontal arm, a cylinder having one end pivoted to the frame to permit swinging of the opposite end of the cylinder through a vertical arc, said opposite end being adjacent the bell crank, a piston in said cylinder, a piston rod projecting from the cylindcr and having its extremity connected to the vertical arm of the,bell crank, a pair of by-pass pipes each connecting opposite ends of said cylinder, an adjustable check valve in each pipe, said check valves opening in opposite direction and one of said pipes being larger than the other.

2. In a device of the kind described, a

cylinder having a piston and piston rod. said cylinder having a head at each end, said piston rod extending through one of said heads, .a pair of by-pass pipes each connecting opposite ends of said cylinder, and an adjustable check valve in each pipe, said check valves opening in opposite directions and one of said pipes being larger than the other.

In testimony whereof I aflix my signatnre.

HARRY L.. LIYEZEY. 

